APA (7th ed.) Citation

O'Brien, D. M. (2005). Constitutional law and politics (6a. ed.). W. W. Norton.

Chicago Style (17th ed.) Citation

O'Brien, David M. Constitutional Law and Politics. 6a. ed. Nueva York: W. W. Norton, 2005.

MLA (9th ed.) Citation

O'Brien, David M. Constitutional Law and Politics. 6a. ed. W. W. Norton, 2005.